Help my secoundry pci gfx card has died

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Please, please could some offer me some help, I have been running 3 tft's on my main system, at the moment I have a 7800gtx PCI-E for 2 screens and an old PCI Creative labs Permedia 2 card for my 3rd screen,

last week the old PCI Permedia 2 card finaly gave up, I have tested it on all my systems its just died, anyhow I went on the bay and brought a Matrox G450 Max Dual Head (PCI), this card arrived this morning and since then I just can't get it to boot with my 7800gtx,

as soon as the windows XP welcome screen appears it just blue screens, same in safe mode also, does anybody know about mixing gfx cards together ?, I,ve just order'd a 20"WS TFT and was really hoping that the matrox would enable me to use 4 screens.

 

[Things change I've changed]

look, forget about the above if that can't be fixed then fine I'll resell the card, but If matrox is a no go then how would I be able to get 4 screens up and running ?, should a 5200/6200 pci gfx card work with my 7800gtx ???, or maybie even a old ATI dual head PCI card like a ATi Radeon 7000 etc.

I'm not being lazy I have checked google for hours, i,ve been in every local computer shop and nobody seems to know, i'm getting to the stage now where I think the only option is to buy a sli setup just so that I can have 4 screens up and running but surely that can't be the only option ?

 

[testa12]

xp should support multiple monitors (think of bill gates). Sounds like you may have some IRQ conflict perhaps or maybe a driver issue.

Before giving up, take out any other PCI cards.

...Check the PCI-E card on its own is ok, then check the PCI card on its own is ok.

Check any BIOS settings relating to PCI and if it were me, I'd flatten the OS and start again as I always do when I buy any substantial new hardware.

at least try a bit of trial and error before giving up

 

[Things change I've changed]

xp should support multiple monitors (think of bill gates). Sounds like you may have some IRQ conflict perhaps or maybe a driver issue.

It does, I,ve tried chagning the irq's manually, setting them to auto, changing the plug and play os to enable/disable (just in case), but still no go.

Before giving up, take out any other PCI cards.

Done, only had a audigy 2 in there, took that out but still blue screens.

...Check the PCI-E card on its own is ok, then check the PCI card on its own is ok.

This is where I think the problem may lie as 7800GTX PCI-E is fine on it's own, then I try the Matrox on it's own and nothing appears on the screen, even if the bios option is changed from auto to "boot to pci first" still nothing shows up on screen, yet If I leave the computer on, once windows is loaded the desktop suddenly appears, very strange, that being the only card in my system there should be no reason why you can't see nothing, not even the post screen at the start, although I've tried this card on my secoundry system and it works fine,

So I have a feeling that my m/b just don't like it for some reason,

at least try a bit of trial and error before giving up

I,ve been fighting with it since 11am this morning ,



Anyhow if someone could please tell me if a 5200/6200 pci gfx card might work with my 7800gtx ???, or maybie even a old ATI dual head PCI card like a ATi Radeon 7000 etc, has anyone tried anything like this ?

Any more help would be greatly apprecaited.